For the 4th of July, hot and mainly dry conditions are expected with only a very isolated thunderstorm possible across the mountains. Clouds will increase late tonight, with a few isolated showers also possible across the west and north. A cold front will then push across the state Sunday, bringing widespread showers and thunderstorms along with cooler conditions. Thunderstorm activity and cooler temperatures could then continue into next week.

Rock Springs forecast:

Independence Day: Sunny, with a high near 88. West wind 8 to 13 mph.

Tonight: Partly cloudy, with a low around 59. West wind 6 to 11 mph.

Sunday: A slight chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Some of the storms could produce small hail, gusty winds, and heavy rain. Mostly cloudy, with a high near 78. West wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.

Sunday Night: A 40 percent chance of showers and thunderstorms before 1am. Some of the storms could produce small hail, gusty winds, and heavy rain. Mostly cloudy, with a low around 53. West southwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

Monday: A 40 percent chance of showers and thunderstorms after 7am. Some of the storms could produce heavy rain. Partly sunny, with a high near 77. Light and variable wind becoming east 5 to 9 mph in the morning.

Monday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Some of the storms could produce gusty winds. Mostly cloudy, with a low around 54. East northeast wind around 6 mph becoming west northwest in the evening.

Tuesday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79. Light and variable wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

Tuesday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.

Wednesday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.

Wednesday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.

Thursday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Breezy.

Thursday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 56. Breezy.

Friday: Sunny, with a high near 83.